code: def __init__(self, input_key, output_key, mean, std) -> None:
      super().__init__()
      self.input_key = input_key
      self.output_key = output_key
      self.mean = mean
      self.std = std
  
file_path: popmon/tests/popmon/base/test_module.py
imports: import numpy
  import pytest
  from popmon.base import Module
label_desc: Use image node_id 1 to create a new Scaler object from inherited base classes: Module with example: obj = Scaler(input_key, output_key, mean, std)